They might. I think I ran over one of em with my mountainbike last week while they were playing hippie golf.
The best thing I ever saw was a guy had is disc stolen by a dog. He tossed it and out of nowhere came this Australian Shepherd who caught it mid-air, and took off. I was driving, stopped at a red light, and I saw this happen in the the park... The guy ran after the dog, but I don’t know what happened. Alas, the light turned green...